Energy-saving middle-frequency-inverting automatic gang bonder with multiple transformers

Abstract

The invention relates to an energy-saving middle-frequency-inverting automatic gang bonder with multiple transformers. The energy-saving middle-frequency-inverting automatic gang bonder comprises a power-frequency power supply, a plurality of bonding heads, a three-phrase rectifier, an energy-storage capacitor, a middle-frequency inverter, a plurality of tapped middle-frequency transformers and a plurality of middle-frequency rectifiers. A controller is connected with the three-phrase rectifier, the energy-storage capacitor, the middle-frequency inverter and the tapped middle-frequency transformers respectively. The energy-saving middle-frequency-inverting automatic gang bonder can control gang bonding at multiple points accurately, can perform gang bonding simultaneously, and has the advantages of small size, high power factor, high power efficiency, low energy consumption and the like.

Description

technical field [0001] The invention relates to a multi-point group welding machine for welding metal products, in particular to an energy-saving intermediate frequency inverter multi-transformer automatic group welding machine. Background technique [0002] At present, the known group welding machines are powered by power frequency AC, and use power frequency transformers to generate low-voltage instantaneous large currents for spot welding between metals. Since power frequency transformers require instantaneous high currents during work, they will generate large currents for the power grid It is well known that the power factor is low and the power supply efficiency is low. Due to the volume limit of the power frequency transformer, the multi-spot welding machine uses a common main transformer and a secondary circuit, and the current distribution of the welding points is not good. Even and can not be adjusted, independent multi-loop control cannot be realized for group wel...

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Problems solved by technology

[0002] At present, the known group welding machines are powered by power frequency AC, and use power frequency transformers to generate low-voltage instantaneous large currents for spot welding between metals. Since power frequency transformers require instantaneous high currents during work, they will generate large currents for the power grid It is well known that the power factor is low and the power supply efficiency is low. Due to the volume limit of the power frequency transformer, the multi-spot welding machine uses a common main transformer and a secondary circuit, and the current distribution of the welding points is not good. Even and cannot be adjusted, independent multi-loop control cannot be realized for group welding with more than dozens of solder joints, the production efficiency is low, the volume is large, the production cost is increased, and resources are wasted

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